Value Collection JY4861233 Hand Tap 1-1/16-18 Unef

Product Description

The VALUE COLLECTION JY4861233 is a straight-flute hand tap designed for cutting 1-1/16-18 UNEF internal threads in a variety of workpiece materials. Built from high speed steel with a bright, uncoated finish, this tap offers solid wear resistance for general-purpose threading applications. The plug chamfer — typically 3 to 5 threads of lead — makes it suitable for threading through-holes and providing a smooth entry into partially blind holes. With 4 flutes and a right-hand thread direction, it follows standard hand-tapping practice and works with conventional tap wrenches and tapping fixtures. Overall length is 5.125 inches, providing adequate clearance in most bench and machine setups.

This tap is suited for maintenance, repair, and production threading operations where UNEF fine-thread pitch is specified. It is commonly used in machine shops, industrial maintenance environments, and precision manufacturing where close tolerances are required. The Class 3B fit designation indicates a tight tolerance thread, appropriate for assemblies demanding accurate thread engagement. Licensed machinists, toolmakers, and maintenance technicians are the primary users of this type of tap.

Key Features

• 1-1/16-18 UNEF thread form for fine-pitch internal threading
• Plug chamfer provides 3 to 5 thread lead for through-hole and partial blind-hole entry
• High speed steel construction for general-purpose durability across common workpiece materials
• Bright, uncoated finish — no coating to affect thread tolerance or require special handling
• Class 3B fit with H4 thread limit for tight-tolerance thread production
• 4-flute straight-flute geometry compatible with standard hand-tapping technique

Compatibility

Designed as a general-purpose hand tap for cutting 1-1/16-18 UNEF right-hand internal threads in accordance with Unified National Extra Fine thread standards.

Installation Notes

This tap is installed by hand or with a standard tap wrench; ensure the workpiece is securely fixtured before starting the thread. Always use a cutting fluid or tapping compound appropriate for the workpiece material to reduce friction and improve thread finish. Align the tap perpendicular to the work surface before applying torque to avoid tap breakage or thread misalignment. Follow applicable shop safety procedures and relevant standards for threading operations.